The measure escalates the 50% tariffs imposed by the US on selected Canadian dairy products on August 22. Separately, Washington has added various Canadian cheese products to the list of imports facing 50% duties from September 15.<\/p>\n
Canada\u2019s countermeasures<\/a> took effect on September 8. They apply 50% tariffs to US whey protein concentrate, powdered and modified whey, casein, milk albumin, milk protein substances, and several milk powders. US cheeses, including cheddar, mozzarella, Gouda, Parmesan, and processed cheese, face 25% duties.<\/p>\n The Canadian government says the wider counter-tariff package covers CA$27.6 billion (US$20 billion) of US imports and matches Washington\u2019s measures \u201cdollar for dollar, rate for rate.\u201d<\/p>\n Whey market absorbs another shock<\/p>\n The restrictions introduce another risk for manufacturers already contending with tight whey availability and elevated prices. Food Ingredients First recently reported that \u201cproteinmaxxing\u201d and GLP-1-related demand are squeezing whey supplies<\/a>, prompting suppliers to expand capacity and formulators to explore complementary plant proteins and blended systems.<\/p>\n The market pressure has been visible in company results. Arla Foods Ingredients\u2019 first-half revenue<\/a> increased by 19.3%, supported by higher whey prices and demand for value-added nutrition ingredients.<\/p>\n The Canadian Health Food Association<\/a> warns that whey protein, honey, and packaging may all be affected, with implications for sports nutrition, functional foods, snacks, and other wellness products. The organization says the counter-tariffs add \u201canother layer of cost and uncertainty\u201d for businesses already managing pressure on margins and supply chains.<\/p>\n Our previous reporting examined how manufacturers are responding to rising whey costs<\/a> through collagen-whey combinations, plant proteins, enzymes, and longer-term precision fermentation strategies. The new trade barriers may accelerate that diversification, although alternative systems must still meet nutrition, taste, texture, solubility, and processing requirements.<\/p>\n US groups differ over tariff strategy<\/p>\n US dairy organizations have generally supported the earlier tariffs. They see them as leverage in the long-running dispute over Canada\u2019s administration of dairy tariff-rate quotas under the US\u2013Mexico\u2013Canada Agreement (USMCA).<\/p>\n Before the latest import ban was announced, National Milk Producers Federation<\/a> (NMPF) president and CEO Gregg Doud said the tariffs showed that Canada\u2019s treatment of its USMCA commitments carried \u201creal consequences.\u201d NMPF and the US Dairy Export Council have called for binding changes to Canadian quota eligibility and administration, alleging chronic quota underfill and circumvention of USMCA dairy protein rules.<\/p>\n However, the wider Agricultural Coalition for USMCA, which represents over 50 farm organizations, has pressed for products covered by the agreement to be exempted from the duties. Spokesperson Bryan Goodman said the three countries need \u201ca good trilateral agreement,\u201d arguing that sectoral disputes should be resolved within a strengthened USMCA framework. The positions reveal different priorities within US agriculture. Dairy representatives have supported targeted tariff pressure over market access, while the wider coalition \u2014 including the US Dairy Export Council \u2014 has emphasized USMCA exemptions and predictable regional trade. NMPF has called on Canada to return to negotiations and prevent further escalation. However, its cited September 1 statement predates the new whey import ban.<\/p>\n US cheese exporters also have significant exposure to Canada\u2019s response. The Wisconsin Cheese Makers Association<\/a> says the US shipped 51.5 million lb of cheese to Canada in 2025, three times the 2018 volume. Nearly 10% of US cheese production was exported globally last year, making continued market access increasingly important to processors.<\/p>\n Manufacturers seek predictability<\/p>\n Canadian food and manufacturing groups have generally backed a targeted response while warning against tariffs on essential inputs.<\/p>\nThe US import ban adds pressure to an already strained whey protein market.For cross-border customers, the effects could extend beyond the immediate tariff costs and import restrictions. Manufacturers may have to review contracts, qualify alternative suppliers, redirect inventories, or reformulate products. Whey proteins are used widely in sports nutrition, snacks, beverages, bakery products, and dairy applications, where switching ingredients is rarely a straightforward one-for-one substitution.<\/p>\n
Canadian tariffs target US whey, casein, and milk proteins at rates reaching 50%.<\/p>\n